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See detailDer Einfluss einer genetischen Variation der Adenosin Desaminase auf die Anfälligkeit für Schlafdruck ist tageszeitabhängig
Reichert, Carolin; Maire, Micheline; Gabel, Virginie et al

Conference (2012)

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See detailMass spectrometry as a tool to search specific ligands for G protein coupled receptors.
Cologna, Camila Takeno; Echterbille, Julien ULg; De Pauw, Edwin ULg et al

Conference (2012)

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See detailAu bénéfice du doute. Regards croisés sur l'interprétation des sources en histoire de l'art et en littérature
Piront, Julie ULg; Haug, Hélène

Conference (2012)

Dans le cadre d'une session "jeunes chercheurs", cette communication à deux voix, partagée avec Hélène Haug (UCL, SSH/INCA), présente successivement nos projets de thèse respectifs, en Littérature et en ... [more ▼]

Dans le cadre d'une session "jeunes chercheurs", cette communication à deux voix, partagée avec Hélène Haug (UCL, SSH/INCA), présente successivement nos projets de thèse respectifs, en Littérature et en Histoire de l'art, avant d'élaborer un regard critique sur les sources narratives et iconographiques, notamment sur le problème de la "représentation". Enfin, un examen des matériaux de réflexions permet d'apporter des pistes de solutions d'interprétation de ces sources. [less ▲]

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See detailBioinformatic screening for transmission blocking vaccine candidates of Theileria annulata.
Lempereur, Laetitia ULg; Pieszko; Durrani et al

Conference (2012)

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See detailProceedings of the 2nd Workshop on Flavor Symmetries and Consequences in Accelerators and Cosmology (FLASY12)
de Medeiros Varzielas, I.; Hambrock, C.; Hiller, G. et al

Conference (2012)

These are the proceedings of the 2nd Workshop on Flavor Symmetries and Consequences in Accelerators and Cosmology, held 30 June 2012 - 4 July 2012, Dortmund, Germany.

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See detailRépartition spatiale du Desman des Pyrénées (Galemys pyrenaicus) en France et premier aperçu de sa structure génétique
Gillet, François ULg; D'Amico, Frank; Blanc, Frédéric et al

Conference (2012)

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See detailDevelopment of a Substitute Mixture for Diesel Fuel
Reiter, A M; Wallek, T; Mair-Zelenka, P et al

Conference (2012)

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See detailAnaplasma phagocytophilum infection in Roe deer (Capreolus capreolus) in southern Belgium.
Nahayo, Adrien; Wirtgen, Marc; Grégoire, Fabien et al

Conference (2012)

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See detailQuelle autonomie fiscale locale ?
Bourgeois, Marc ULg; Bayenet, Benoit

Conference (2012)

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See detailNo utopianism nor solidarism. Is a materialist and critical understanding of association possible ?
Frère, Bruno ULg

Conference (2012)

From Engels to Adorno and Horkheimer, to Althusser or Bourdieu everything seems to occur as if criticism in its main variation – the Marxist approach – had worked to feed a principal way of thinking ... [more ▼]

From Engels to Adorno and Horkheimer, to Althusser or Bourdieu everything seems to occur as if criticism in its main variation – the Marxist approach – had worked to feed a principal way of thinking: individuals (workers, proletarians, social actors, etc.) unconsciously reproduce the social structures of capitalism which alienate them. They accept the conditions enforced on them and no longer seek to rebel against a world which substantially impoverish their labor, their soul and their creativity. Even worse: they ensure the reproduction of the system by seeking to engage in mass consumption at any price. There is little doubt that Marx was not wrong to point out, with the concept of alienation, the inhuman working conditions in which the nineteenth century proletariat was, and which a huge part of the workers still have to face all around the world nowadays. Should the worker-consumer only be seen as a scatterbrain being who unconsciously reproduces, to use Bourdieu’s language, the conditions of his domination? My intention here is not to put Marx in the dock, since he is, I am sure, an author whose work has remained of unequalled power for over a century. However, I would like to try and show that by dint of favouring almost exclusively the concept of alienation in his work, there is a considerable risk that only a negative path for criticism can emerge from it. It is that initial heart of criticism which was Marx’s thinking and which has irrigated the whole twentieth century from the Frankfurt School to French critical sociology that I would like to put into perspective by suggesting a new agenda for critical research that I would characterize as, for now and for lack of a better term, positive. This agenda of research is in its early days. Nonetheless, in my opinion, a theoretical base should be given to it straight away. The following pages will try to establish it by notably drawing on the main theoretician of libertarian anarchism, Marx’s rival on socialist theory, Proudhon. However, I would like to insist on the fact that the purpose is not to truly turn the latter against Marx . Because I think that Marx must remain a topical issue, I rather wish to demonstrate that, at the cradle of criticism, right next to him, there is an equally – or even more? – Materialist position which could be pertinently combined to the criticism of alienation . This position might be helpful to highlight, here and now, possibilities of emancipation through labor which are not exclusively conditioned by the “Grand Soir”. Proudhon’s work is certainly philosophically and economically weaker than Marx’s. However, Proudhon is very interesting in the way he manages to see in a “laboring” man something else than a slave-laboring animal deprived of subjectivity by capitalism and who only exists as a production tool. In that way, criticism, if any, may be considered as positive [less ▲]

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See detailModeling of Surrogate Fuels with Real Components
Mair-Zelenka, P; Wallek, T; Reiter, A M et al

Conference (2012)

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See detailLes corrélats neuronaux de la Conscience
Thibaut, Aurore ULg

Conference (2012)

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See detailCultural Marxism in the Anglo-Saxon radical right literature
Jamin, Jérôme ULg

Conference (2012)

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See detailThermodynamic Characterization of Multicomponent Mixtures Based on Real Components
Reiter, A M; Wallek, T; Mair-Zelenka, P et al

Conference (2012)

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See detailThe mata’a: typology, technology and function
Flas, Damien ULg

Conference (2012)

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See detailAnhydrous melting of a primitive martian mantle: new experiments at 1-2 GPa
Collinet, Max ULg; Médard, Etienne; Vander Auwera, Jacqueline ULg et al

Conference (2012)

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See detailCoproperty and construction of dwellings
Kohl, Benoît ULg

Conference (2012)

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See detailSaturn night-­‐side variability
Pryor, W.; Gustin, Jacques ULg; Holsclaw, G. et al

Conference (2012)

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See detailENMG de l'épaule douloureuse
WANG, François-Charles ULg

Conference (2012)

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See detailBelgian Magdalenes. History of an aborted scandal?
Dumortier, Els; François, Aurore ULg

Conference (2012)

The analysis of cases of several Belgian juvenile courts (Antwerp, Brussels, Namur, Arlon) revealed questionable practices within some establishments for young delinquents. One institution in particular ... [more ▼]

The analysis of cases of several Belgian juvenile courts (Antwerp, Brussels, Namur, Arlon) revealed questionable practices within some establishments for young delinquents. One institution in particular (Refuge Sainte Madeleine, Brussels), specialized in the rehabilitation of delinquent (and often pregnant) girls, developed suspicious methods of treatment. Indications of dysfunction in this private institution are numerous, and present a lot of similarities with practices observed in Irish Magdalene Asylums: teenage girls employed in a laundry run by a religious congregation, unexplained « disappearances » of the children born to delinquent girls, very high death rates, complaints from minors themselves and from their families regarding forms of negligence and even abuse. This local example leads us to question the practices of the Belgian protection system, and more specifically, the ‘pedogical approach’ in Magdalena covents. How to describe and explain the ‘pedagogical approach’ implemented within these institutions? What is the daily life of the institutionalized girls taking into account their living conditions and implemented discipline? Who worked in these private institutions? Were they trained in modern techniques of rehabilitation, and if so, what principles and applications were associated with these techniques? What is the influence of the Belgian separation between public and private sector with the child protection system? This case also invites us to examine the tension between official discourse and practice and raises questions on gendered reactions within the Belgian system. [less ▲]

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See detailDissociation entre recollection et familiarité dans la maladie d’Alzheimer: Etude des bases cérébrales en imagerie par résonance magnétique fonctionnelle
Bastin, Christine ULg; Genon, Sarah ULg; Collette, Fabienne ULg et al

Conference (2012)

1. Matériels et méthodes. Les difficultés mnésiques des patients à un stade léger d’une maladie d’Alzheimer sont marquées par une atteinte sévère de la récupération consciente des informations dans leur ... [more ▼]

1. Matériels et méthodes. Les difficultés mnésiques des patients à un stade léger d’une maladie d’Alzheimer sont marquées par une atteinte sévère de la récupération consciente des informations dans leur contexte d’apprentissage (recollection). Par contre, la reconnaissance des informations sur base d’un sentiment de familiarité (savoir qu’une information a été rencontrée auparavant sans récupérer son contexte d’apprentissage) est relativement préservée (Dalla Barba, 1997; Rauchs et al., 2007). L’objectif de cette étude était de révéler les substrats cérébraux des processus de recollection et familiarité dans la maladie d’Alzheimer au moyen d’une tâche de mémoire associative analysée selon les principes de la Procédure de Dissociation des Processus (Jacoby, 1991). Pendant une acquisition en IRM fonctionnelle, 26 patients avec une maladie d’Alzheimer probable à un stade léger et 17 témoins âgés ont étudié des paires de mots, puis ont dû les reconnaître parmi des paires recombinées (deux mots vus mais pas ensemble) et des paires nouvelles. 2. Résultats. Les analyses comportementales ont indiqué que 10 patients Alzheimer avaient des indices de recollection nuls (AD-), tandis que 16 autres patients présentaient des processus de recollection résiduels (AD+) bien que significativement moins importants que les témoins. Par contre, le score estimant la contribution des processus de familiarité était équivalent dans les trois groupes. L’analyse de l’activité cérébrale a montré que, chez les patients AD+ comme chez les témoins, la recollection activait le cortex cingulaire postérieur. Cependant, cette région était fonctionnellement connectée à l’hippocampe, au cortex pariétal inférieur et au cortex préfrontal dorsolatéral uniquement chez les témoins. Par ailleurs, dans les trois groupes, la familiarité activait le sillon intrapariétal. 3. Conclusion. Cette étude montre un déficit sévère de recollection et une relative préservation de la familiarité chez des patients Alzheimer. Lorsque les patients possèdent des capacités résiduelles de recollection, celles-ci sont soutenues par le cortex cingulaire postérieur comme chez les personnes âgées saines. Cependant, une perturbation de la connectivité fonctionnelle entre le cortex cingulaire postérieur et des régions impliquées dans la mémoire relationnelle, les aspects subjectifs de la recollection et les processus de monitoring post-récupération suggère que la qualité de la recollection résiduelle des patients Alzheimer est dégradée. 4. Références. Dalla Barba, G. (1997). Recognition memory and recollective experience in Alzheimer's disease. Memory, 5, 657-672. Jacoby, L.L. (1991). A process dissociation framework: Separating automatic from intentional uses of memory. Journal of Memory and Language, 30, 513-541. Rauchs, G., Piolino, P., Mézenge, F., Landeau, B., Lalevée, C., Pélerin, A. et al. (2007). Autonoetic consciousness in Alzheimer's disease: Neuropsychological and PET findings using an episodic learning and recognition task. Neurobiology of Aging, 28, 1410-1420. [less ▲]

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See detailAutomated detection of magnetospheric modes to investigate solar wind-magnetosphere coupling
Milan, S. E.; Imber, S. M.; Coxon, J. et al

Conference (2012)

The magnetosphere is known to respond to solar wind driving by displaying a variety of behaviours known as magnetospheric modes, including the substorm cycle, sawtooth intervals, and steady magnetospheric ... [more ▼]

The magnetosphere is known to respond to solar wind driving by displaying a variety of behaviours known as magnetospheric modes, including the substorm cycle, sawtooth intervals, and steady magnetospheric convection. Other behaviour includes geomagnetic storms and periods of relative magnetospheric quiescence associated with northward interplanetary magnetic field. There have been many studies of the changes in magnetospheric open flux content during different modes to investigate the role of magnetic reconnection at the magnetopause and in the magnetotail in determining the magnetospheric response. In this study we attempt an automated recognition of different modes by their characteristic signatures in geomagnetic indices and other magnetospheric state parameters, including open flux. This allows us to investigate the interplanetary conditions that give rise to different behaviours. [less ▲]

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See detailLe vallon synclinal de Sprimont à Chanxhe (Vallée de l’Ourthe)
Briffoz, Albert; Willems, Luc ULg

Conference (2012)

Plan du synclinal calcaire de Sprimont et principales pertes Les calcaires carbonifères constituant le centre du synclinal absorbent en des pertes (chantoires) tous les ruisseaux du vallon qui sont issus ... [more ▼]

Plan du synclinal calcaire de Sprimont et principales pertes Les calcaires carbonifères constituant le centre du synclinal absorbent en des pertes (chantoires) tous les ruisseaux du vallon qui sont issus des grès famenniens. Ces pertes subissent un recul vers l’amont des vallons secondaires comme l’ont montré différentes études (R. Michel, C.Ek et al.) Les pertes, si elles sont maintenues ouvertes, évitent des inondations au long du vallon. Certaines furent aménagées aussi utilement pour les excédents de pluies à la route de la Préalle, au drainage du terrain de football à Tultay, et au Vieux Bac. Recherches Dès 1960, le Club de Recherches Spéléologiques Ourthe Amblève (CRSOA) a prospecté et désobstrué 10 grottes et gouffres ainsi que deux pertes (chantoires) devenues pour la première fois accessibles à l’homme. Parmi les réseaux découverts, celui d’Enfer-Fissures présente un développement connu de 979 m pour un dénivelé de 57 m. Le gouffre Persévérance atteint les 90 mètres de profondeur et donne un accès à un petit écoulement souterrain qui se perd dans les profondeurs du réseau. Le CRSOA a coloré 5 fois des pertes et dosé une restitution à la résurgence des eaux au Lac Bleu. La section d’écoulement naturel souterrain à l’approche de Chanxhe s’élève à 8 m2 soit plus de 10 fois la section d’écoulement de l’égouttage en voirie vers Chanxhe. Résurgence du Lac Bleu La résurgence du Lac Bleu est la seule sortie d’eau connue à ce jour drainant les eaux souterraines du synclinal de Sprimont. En surface, elle forme un petit étang lié à la construction d’une digue. Ces travaux avaient été réalisés afin de capter les eaux de la résurgence pour actionner une roue à aubes. [less ▲]

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See detailSelf-appraisal and medial prefrontal activation in early stage Alzheimer’s disease.
Genon, Sarah ULg; Collette, Fabienne ULg; Angel, Lucie et al

Conference (2012)

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See detailReconstruction de la papille: Un défi
LAMBERT, France ULg

Conference (2012)

La dentisterie esthétique moderne est principalement basée sur la bonne harmonie gingivodentaire. Le challenge pour restaurer l'esthétique d’un sourire est souvent de recréer cet équilibre entre les ... [more ▼]

La dentisterie esthétique moderne est principalement basée sur la bonne harmonie gingivodentaire. Le challenge pour restaurer l'esthétique d’un sourire est souvent de recréer cet équilibre entre les tissus mous et la réhabilitation prothétique. Au cours de cette session, nous aborderons plus spécifiquement l’aspect des tissus mous, de leur architecture, de leur intégration avec les éléments prothétiques et de leurs volumes, etc.... Un des éléments clef de cette architecture des tissus mous est la présence des papilles inter-dentaires. Les objectifs de cette session se résument en trois volets : Tout d’abord, le point sera fait sur les différentes causes des pertes papillaires. Nous envisagerons aussi comment les éviter ou les limiter à travers des actes chirurgicaux moins invasifs, en respectant davantage la physiologie des tissus parodontaux. La prévention de la perte des papilles passe aussi par le choix des matériaux et par les actes prothétiques. Ces aspects seront également discutés. Ensuite, le second objectif de cet exposé visera, en cas d’absence papillaire, à analyser la situation clinique et d’en définir le pronostique de régénération. Le pronostique est évalué sur base des connaissances actuelles issues de la littérature scientifique, et par le biais d’une bonne analyse esthétique et radiographique de la situation clinique. Dès lors, en fonction d’un pronostic favorable, modéré, ou défavorable, les options de reconstruction papillaire pourront être pondérées. Enfin, la dernière partie de cette conférence sera dédiée aux techniques et méthodes de régénération papillaires. À travers de nombreux cas cliniques, les différentes techniques de régénération des papilles, qu’elles soient chirurgicales, orthodontiques ou prothétiques, seront envisagées de manière systématique en fonction de la situation clinique initiale. En effet, une bonne analyse est impérative pour le choix de la technique optimale. [less ▲]

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See detailComment j'explore une atteinte des nerfs crâniens ?
WANG, François-Charles ULg; LOZZA, Alessandro

Conference (2012)

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See detailMediterranean lignocellulosic biomass delignification and lignin valorization into high-added value components
Manara, Panagiota; Richel, Aurore ULg; Zabaniotou, Anastasia

Conference (2012)

The present study approaches the extraction of lignin samples from several lignocellulosic renewable feedstocks, including raw materials from Greece. The valorization of these lignins samples into high ... [more ▼]

The present study approaches the extraction of lignin samples from several lignocellulosic renewable feedstocks, including raw materials from Greece. The valorization of these lignins samples into high-added value components will also be explored using chemical catalytic routes and “green chemistry” methodology. The present study is a collaboration of Biomass Group of Aristotle University of Thessaloniki, Greece and Gembloux Agro-Bio Tech, in the frame of UBIOCHEM COST ACTION C0903, performed at the Laboratories of Biological and Industrial Chemistry Unit, Gembloux Agro-Bio Tech, University of Liege with samples preparation at AUTh. The lignin extraction from lignocellulosic biomass takes place via chemical, thermal and mechanical routes, including acid or basic processes, steam cracking, steam explosion. Statistical approaches (i.e. response surface methodology) are used for the optimization of processing parameters. Physico-chemical characterization of lignin materials is considered using specific techniques developed by the research team of Agro-Bio-Tech Institute, including qualitative and quantitative mono- and bidimensionnal NMR spectroscopy, MALLS, FT-IR, TGA and chemical methods. The characterization of the lignocellulosic materials before and after pretreatment protocol is investigated regarding the determination of extractives, ash, total lignin contents, and structural carbohydrates as well as proteins contents. Chemical catalytic routes and “green chemistry” methodology is conducted in order to valorize lignin. [less ▲]

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See detailBrucellosis in marine mammals stranded on the Belgian and northern France coast
Jauniaux, Thierry ULg; Brenez, C.; Fretin, D. et al

Conference (2012)

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See detailA mineralogical and microstructural study of 7 eucrites (A-881394, Y-791195, Y-981617, Y-790266, Y-791186, Y-792510, Y-793591)
Foucart, Hélène ULg; Holness, Marian; Namur, Olivier ULg et al

Conference (2012)

The mineral chemistry and the detailed microstructure of seven eucrites (A-881394, Y-791195, Y-981617, Y-790266, Y-791186, Y-792510 and Y-793591) of the NIPR collection of Antarctic meteorites have been ... [more ▼]

The mineral chemistry and the detailed microstructure of seven eucrites (A-881394, Y-791195, Y-981617, Y-790266, Y-791186, Y-792510 and Y-793591) of the NIPR collection of Antarctic meteorites have been examined in order to constrain their modal mineralogy and chemistry and to explore the potential of microstructural analysis as a new tool for interpreting meteorites. [less ▲]

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See detailSimultaneous Cassini VIMS and UVIS observations of Saturn's southern aurora
Melin, H.; Stallard, T.; Miller, S. et al

Conference (2012)

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See detailQuestions à Cécile Laborde
Delruelle, Edouard ULg

Conference (2012)

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See detailMise en place de l'analyse par LC/MSMS des métanéphrines
LE GOFF, Caroline ULg

Conference (2012)

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See detailSorry Sir, Your Flight has been Cancelled! The Role of Employee Competencies in Emotionally Charged Service Encounters
Delcourt, Cécile ULg; Gremler, Dwayne; Van Riel, Allard et al

Conference (2012)

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See detailRecycling of Valuabe Metals from Spent Lithium Ion Batteries
Noll, H; Pfennig, Andreas ULg; Siebenhofer, M

Conference (2012)

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See detailRationalité paysanne et exigence agronomique dans la gestion de la matière organique à Donwari dans le bassin cotonnier du Nord-Bénin
Assogba, Sonagnon Claude-Gervais ULg; Tossou, Cocou Rigobert; Lebailly, Philippe ULg

Conference (2012)

Au Bénin, la production cotonnière s’est accompagnée d’une surexploitation des ressources foncières et a entraîné à long terme leur dégradation. Ainsi, diverses initiatives se développent pour une gestion ... [more ▼]

Au Bénin, la production cotonnière s’est accompagnée d’une surexploitation des ressources foncières et a entraîné à long terme leur dégradation. Ainsi, diverses initiatives se développent pour une gestion rationnelle de la fertilité du sol avec un regain d’intérêt pour la fertilisation organique. A partir d’une typologie des cotonculteurs du Nord-Bénin établie suivant des critères endogènes de prospérité, cet article révèle l’existence d’une diversité de pratiques paysannes de gestion de la fumure organique. Ainsi, le niveau de prospérité détermine dans une certaine mesure les stratégies de gestion adoptées par l’exploitant, stratégies basées sur une maximisation des apports de matière organique plutôt que sur les exigences agronomiques du cotonnier. L’étude a montré la nécessité de mener des recherches pour mieux apprécier l’efficacité de telles pratiques et leur impact dans la restauration de la fertilité des sols. [less ▲]

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See detailNew data from an old site: Neandertals at Goyet (Belgium) and their mortuary behavior
Rougier; Crevecoeur; Beauval et al

Conference (2012)

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See detailBacillus subtilis: biocontrol and growth promotion
Ongena, Marc ULg

Conference (2012)

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See detailGrasp Stability from Vision and Touch
Bekiroglu, Yasemin; Detry, Renaud ULg; Kragic, Danica

Conference (2012)

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See detailQuelle conscience dans le coma?
Vanhaudenhuyse, Audrey ULg

Conference (2012)

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See detailInterference Fragmentation Functions and Transverse Spin Studies.
Courtoy, Aurore ULg; Bacchetta, Alessandro; Radici, Marco

Conference (2012)

We report on the extraction of dihadron fragmentation functions (DiFF) from the semi- inclusive production of two hadron pairs in back-to-back jets in e+e− annihilation. A nonzero asymmetry in the ... [more ▼]

We report on the extraction of dihadron fragmentation functions (DiFF) from the semi- inclusive production of two hadron pairs in back-to-back jets in e+e− annihilation. A nonzero asymmetry in the correlation of azimuthal orientations of opposite π+π− pairs is related to the transverse polarization of fragmenting quarks through a significant polarized DiFF. A combined analysis of this asymmetry and the spin asymmetry in the SIDIS process ep↑ → e′(π+π−)X has led to the first extraction of the u and d-flavor transversity parton distribution function in the framework of collinear factorization. [less ▲]

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See detailThe interaction of homeostatic and circadian regulation of sleepiness depends on a PER3 polymorphism
Schmidt, Christina ULg; Maire, Micheline; Reichert, Carolin et al

Conference (2012)

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See detailEvaluation of biobased synthesis pathways based on exergy balances
Frenzel, P; Hillerbrand, R; Pfennig, Andreas ULg

Conference (2012)

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See detailBonobos, Pan paniscus, in the forest-savannah mosaics of West DR Congo: does spatial structure influence the forest use dynamics?
Serckx, Adeline ULg; Huynen, Marie-Claude ULg; Beudels-Jamar, Roseline

Conference (2012)

Bonobos, Pan paniscus, are endemic to the Democratic Republic of Congo (DRC) but the species’ range is still not precisely known. For example, the populations from West DRC have only been identified in ... [more ▼]

Bonobos, Pan paniscus, are endemic to the Democratic Republic of Congo (DRC) but the species’ range is still not precisely known. For example, the populations from West DRC have only been identified in 2005, following inventories conducted by WWF. This region is characterized by a forest-savannah mosaic, a particular ecotone with naturally fragmented forests, in which bonobos have hardly ever been studied in comparison with those evolving in central DRC rainforests. The area also increasingly includes numerous anthropogenic activities including logging and cattle ranching. Effective long-term conservation programs are then essential for the survival of bonobos’ populations. We decided to focus our study on bonobos’ forest use dynamics, testing spatial structure influence on bonobos’ density and forest use. This hypothesis is based on a landscape ecology theory, the pattern-process paradigm, establishing a triangular link between the structure, the composition and the ecological processes of a landscape. We used the interior-to-edge ratio to classify our study area (200km² of forests) in 5 categories of forest patches: (i) corridors (0.1 to 5.5km², ratio of 0), (ii) small patches (3.4 to 4.3km², ratios between 0.23 and 0.33), (iii) middle patch with edge area predominant (13.8km², ratio of 0.7), (iv) middle patch with interior area predominant (22.3km², ratio of 1.17), (v) big patch (122.2km², ratio of 1.43). We walked transects (total effort: 126km) to identify habitats (landscape composition) and bonobos’ use indices (nests and food remains – landscape ecological process). Results unexpectedly showed that bonobos use all forest patches, even corridors, mostly used for feeding. Small patches even include higher nest density than the big patch. Moreover, habitats with predominant Marantaceae understory are correlated with higher nest density. The study is still in process and sampling areas will be increased in further field work. The first results however already indicate that we could elaborate a model predicting bonobos’ presence according to habitats and spatial structure and designate forest patches to protect as a priority. This information should allow formulating specific management recommendations for regional conservation programs and logging concessions [less ▲]

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See detailA new Devonian flora in Argentina: palaeobotanical and stratigraphic implications
Prestianni, C.; Rustan, J. J.; Vaccan, N. E. et al

Conference (2012)

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See detailDairy milk production in the North Vietnam : a case study in Moc Chau
Bui, Thi Nga ULg; Tran Huu, Cuong; Lebailly, Philippe ULg

Conference (2012)

Dairy milk production in Moc Chau contributes to improve the welfare of farm households. It generates daily income for farmers, provides a highly nutritious food for people, create employment ... [more ▼]

Dairy milk production in Moc Chau contributes to improve the welfare of farm households. It generates daily income for farmers, provides a highly nutritious food for people, create employment opportunities for the society. Although it brings a rather high income for farmers, their lives are very hard, and their living standard is quite low. This study aims to apply a monitoring system in farms to assist farmers improving their performance. Six field trips were carried out to help dairy farmers to monitor their farms and collect economic and technical data in 2010-2012 in Moc Chau. The main findings are: stocking rate, milk yield and income were rather high but varied largely from this farm to others. Cost control in farm was not good thus dairy margin was not high. Purchased feed cost was too high. Homegrown feed accounted for a small part of cost but produced large amount of milk while purchased feed dominated a very large proportion of cost but produced less milk quantity. Most of the farmers followed the objective of increasing milk production but did not pay attention to the quality of herd and milk; did not make an optimal decision. Experience, land area, and herd size were the major factors that increased economic performance in farms. [less ▲]

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See detailA Rich Vehicle Routing Problem with Multiple Trips and Driver Shifts
Arda, Yasemin ULg; Crama, Yves ULg; Kucukaydin, Hande ULg et al

Conference (2012)

This study is concerned with a rich vehicle routing problem (RVRP) encountered at a Belgian transportation company in charge of servicing supermarkets and hypermarkets belonging to a franchise. The ... [more ▼]

This study is concerned with a rich vehicle routing problem (RVRP) encountered at a Belgian transportation company in charge of servicing supermarkets and hypermarkets belonging to a franchise. The studied problem can be classified as a one-to-many-to-one pick-up and delivery problem, where there is a single depot from which all delivery customers are served and to which every pick-up demand must be carried back (Gutiérrez-Jarpa et al., 2010). The delivery and backhaul customers are considered to be two disjoint sets, where on a given route backhaul customers can be visited only after all delivery customers are served. Split deliveries and pick-ups are not allowed. The service at a customer must start within the given time window of the customer. However, it is not possible to serve a customer with every available vehicle, since the vehicles at the company’s disposal are of different types according to which the capacity changes. Therefore, our problem can be classified also as a heterogeneous fleet vehicle routing problem with customer-vehicle incompatibilities (Ceselli et al., 2009). The problem at hand requires that the same vehicle may be assigned to several routes, which leads to a multiple-trip RVRP. Furthermore, driver shifts are taken into account so that each vehicle of the fleet starts servicing the customers when the shift of the assigned driver starts. The shift duration is the same for all drivers. If the service of the vehicle exceeds SH, an overtime cost incurs to the transportation company. In such a case, a vehicle can be used during at most a fixed length of time. In addition to the vehicles of the company’s own fleet (i.e. internal vehicles), there is a possibility to request external vehicles for servicing some customers. External vehicles can be used for a fixed maximum amount of time and can start servicing customers at any desired time. A fixed reservation cost and distance and time based variable costs are incurred in the case of an external vehicle, while only distance based variable costs are incurred in the case of an internal vehicle. We employ a binary integer linear programming formulation in order to model our problem. The first constraint set ensures that each customer is visited at least once by either an internal or external vehicle. With the second constraint set, it is guaranteed that each internal vehicle is assigned to at most one tour. The last two constraint sets are the binary restrictions on the assignment variables. In order to solve the problem, we first relax the binary restrictions on the assignment variables and develop a column generation procedure, where we obtain two pricing problems, one for internal vehicles and the other one for external vehicles. The pricing problem of each internal vehicle can be formulated as an elementary shortest path problem with resource constraints, which can be solved using a dynamic programming algorithm based on a bounded bi-directional search (Righini and Salani, 2008). However, since an external vehicle can start the service at any point in time and is paid based on its total travel time, the second pricing algorithm has to take into account an infinite number of Pareto-optimal states (Liberatore et al., 2011). We discuss the efficient solution of the pricing subproblems and present preliminary computational results. [less ▲]

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See detailReDrop
Buchbender, Florian; Aksamija, E; Pfennig, Andreas ULg

Conference (2012)

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See detailEinfluss des Schlaf-Wachverhaltens auf die zerebralen Korrelate kognitiver Leistungsfähigkeit: interindividuelle Unterschiede
Schmidt, Christina ULg; Reichert, Carolin; Maire, Micheline et al

Conference (2012)

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See detailModelling of hollow cylinder tests on Boom Clay: softening, anisotropy and strain localization
François, Bertrand; Labiouse, Vincent; You, S. et al

Conference (2012)

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See detailMerging of spectral datasets from different MIR instruments used in the routine analysis of milk
Fernandez Pierna, Juan; Grelet, Clément ULg; Dehareng, Frédéric et al

Conference (2012)

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See detailLe matérialisme de Brentano
Boccaccini, Federico ULg

Conference (2012)

Detailed reference viewed: 14 (0 ULg)